<template>
    <div class="tab-bar-item" @click="itemClick">
      <div v-if="!isActive"><slot name="item-icon"></slot></div>
      <div v-else><slot name="item-icon-active"></slot></div>
      <div :style="activeStyle"><slot name="item-text"></slot></div>

    </div>
</template>
<script>
export default {
  name:'TabBarItem',
  props:{
    path:String,

    activeColor:{
      type:String,
      default:'#f00'
    }
  },
  data() {
    return {
      // isActive: true,
    }
  },
  computed:{
    isActive(){//icon图标active
      // /home -> item1(/home) = true.
      // /home -> item2(/category) = false
      // /home -> item3(/cart) = false
      // /home -> item4(/profile) = false
      return this.$route.path.indexOf(this.path) !== -1;
    },
    activeStyle(){//字体颜色active
      return this.isActive ? {color:this.activeColor} : {};
    }
  },
  methods: {
    itemClick(){
      // this.$router.push(this.path).catch(err => err);
      this.$router.push(this.path).catch(err => {console.log(err);
      })
    }
  },
}
</script>
<style scoped>
.tab-bar-item{
  height: 49px;
  flex: 1;
  text-align: center;
  font-size: 14px;
}
.tab-bar-item img{
  width: 24px;
  height: 24px;
  margin-top: 3px;
  vertical-align: middle;
  margin-bottom: 2px;
}

</style>